They used to dislike giving small gifts to their polytheist relatives, so they asked about it, and permission was granted for them to give such gifts. Then this verse was revealed, "Not upon you is their guidance, but Allah guides whom He wills. And whatever good you spend is for yourselves, and you do not spend except seeking the face of Allah. And whatever good you spend will be fully repaid to you, and you will not be wronged" [Baqarah 2:272].
كانوا يكرهون أن يرضخوا لأنسبائهم من المشركين، فسألوا، فرضخ لهم، فنزلت هذه الآية: {ليس عليك هدهم ولكن الله يهدي من يشاء وما تنفقوا من خير فلأنفسكم وما تنفقون إلا ابتغاء وجه الله وما تنفقوا من خير يوف إليكم وأنتم لا تظلمون}
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Nasai narrated it in Kubra (10986), as did Ibn Munzir (1), Ibn Abu Hatim in his Tafsir (2852), Hakim (2/285), and Bayhaqi (4/191), all of them from the hadith of Sufyan Thawri, from Amash, from Jafar bin Iyas, from Saeed bin Jubayr, from Ibn Abbas, who related it. Its chain of transmission is sahih. Hakim said, "Sahih chain of transmission." Ibn Jareer narrated it in his Tafsir through another route from Sufyan with his chain, and in it appears the statement that there were people among the Ansar who had lineage ties and kinship with Qurayza and Nadir, and they were reluctant to give charity to them, while wanting them to embrace Islam, so this verse was revealed.As for what Ibn Abu Hatim narrated in his Tafsir (2853), through the route of Ashath bin Ishaq, from Jafar bin Abu Mughira, from Saeed bin Jubayr, from Ibn Abbas, from the Prophet ﷺ, that he used to command that charity be given only to the people of Islam until this verse was revealed, this is munkar, for Ashath bin Ishaq is majhul.